592 WILLIAM T. M. FORBES 



64. EOREUMA Ely 



(Chilo, in part) 



Similar to Diatrsea and Chilo. Ocelli present; palpi as long as head and 

 thorax, tongue weak. R 2 stalked with R 3< . 4 , instead of approximate; front only 

 slightly rounded out. 



1. E. densella Zeller. Yellowish, dusted with brown, veins white, and with 

 clearer yellow line halfway between the veins, alternating with brown lines; 

 a strong black discal dot; black terminal dots and dark streaks opposite the cell 

 and in the fold. Hind wing nearly white. 15-18 mm. 



June and July; September. 



Connecticut to Florida, Illinois, and Texas. 



65. PLATTTES Guenee 



(Chilo, in part) 



Similar to Argyria; fore wing longitudinally marked, and typically narrower 

 (fig. 371), palpus as a long as head and thorax. M 2 and M 3 of hind wing some- 

 times approximate (varying in our species). The only known larva in moss. 



1. P. panalope Dyar. R 2 sometimes partly fused with the stem of R 3 and R< 

 Cream color, with contrasting fuscous streaks. Outer side of palpi fuscous; fore 

 wing with fine dark streaks on veins and heavy ones on interspaces, leaving white 

 lines in the middle of the cell and on the fold. Discal dot black in a white ring. 

 Terminal dots black. Hind wing nearly white. 12-15 mm. (multilinear ella auct., 

 not Hulst; densellus Fernald, not Zeller, at least in part). 



Early stages unknown. Moth in June. 

 Southern States; Connecticut. 



2. P. vobisne Dyar. Silvery white, with several dark brown lines, those in basal 

 part of wing nearly longitudinal, and two zigzag postmedial and subterminal 

 ones; a dark terminal area, and some dark postmedial shading. Hind wing 

 blackish; fringe white with a dark line. 13 mm. 



June ; August. 

 Connecticut; South Dakota. 



66. ARGTRIA Hiibner 

 (Platytes, in part) 



Ocelli present. Rj normally straight, and parallel to Sc and R, (fig. 370), R, 

 and R< only, stalked; M 2 and M 3 separate. Fore wing twice as long as wide, with 

 moderate, somewhat excurved outer margin. Hind wing but little broader, with 

 Sc and R strongly fused; M 2 and M 3 more or less stalked, often strongly. Front 

 normally nearly flat. Palpi variable, normally projecting beyond head for a dis- 

 tance about equal to its length, rarely, nearly twice its length. Larva unknown, 

 probably much like those of Crambus. 



The tiny subtropical species C. lacteella, has been reported from Saranac Inn. 



Key to the species 

 1. Fore wing with a yellow median fascia. 



2. Inner margin yellow on outer half 3. auratella. 



2. Inner margin white on outer half 4. critica. 



1. No yellow fascia. 



2. Inner margin finely edged with yellow 2. argentana. 



2. Inner margin white. 



3. Head white 1. nivalis. 



3. Head and palpi deep yellow rileyella. 



